Polishing-machine



(No Model.)

0. S. LEONARD.

POLISHING MACHINE.

No. 450,709. Patented Apr. 21, 1891..

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CHESTER S. LEONARD, OF PHILADELPHIA, PENNSYLVANIA.

POLISHING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 450,709, dated April 21, 1891.

Application filed November 18, 1890. Serial No. 371,309. (No model.)

To all whom, it may concern:

Be it known that I, CHESTER S. LEONARD, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Polishii]g-\Iacl1i11es; andI do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The special object of the invention is to make a portable machine by which wood, metal, or stone may be conveniently polished, as hereinafter described.

Figure 1 of the drawings is a horizontal section of my portable polisher; Fig. 2, a longitudinal section on the dotted line 00 as of Fig. 1, and Fig. 3 a cross-section on the dotted line y 3 of Fig. 1.

In the drawings, A represents the frame of the machine, and a c bearings therein for the drive-shaft B, which is preferably made with a half-clutch Z) to connect with a like one on a flexible shaft. This shaft may, however, be driven by any suitable power mechanism without affecting the principle of my invention.

On the shaft B are made fast two wormwheels I) b, which mesh into the corresponding worm-wheels c c on the vertical shafts O O. The latter turn in the bearings a a of frame A and are held by nuts 0 0, while on their lower ends are fastened the crank-arms 0 0 which turn in opposite directions. Each one of these crank-arms c is attached at the end to a rod D by a pivot 61. The rods D D are pivoted at one end to the arms c and at the other to the slide-plates E E, so that these plates may reciprocate in opposite directions, carrying on the underside the polishing material F, secured in a recess thereof. lhe plates E are edge grooved at e e on the opposite sides, so as to slide longitudinally on the guide-tenons e. I

My machine may be readily transported and connected with any suitable power.

Having thus described all that is necessary to a full understanding of my invent-ion,what I claim as new, and desire to protect by Letters Patent, is

A portable polishing-machine consisting of the frame A, shaft B, carrying the fast wormwheels I) Z), the vertical shafts U C, carrying worm-wheels c c and crank-arms 0 0 the pivoted rods D D, and the oppositely-reciprocating plates E E to carry the polishing material, all substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

CHESTER S. LEONARD.

Witnesses:

J NO. W. BOILEAU, THos. F. BYRNES. 

